Abrading device for cleaning concave cylindrical surfaces

ABSTRACT

An abrading device to clean fittings and the like has an outer abrading member that receives a folded abrading sheet. The latter is retained in position by an inner retainer member that enters the outer member and retains the abrading sheet in position. A handle serves as a stop that predetermines the position of the abrading sheet on the outer abrading member.

United States Patent Pass 1 July 4, 1972 [541 ABRADING DEVICE FOR CLEANING CONCAVE CYLINDRICAL SURFACES [72] Inventor: Arthur D. Pass, 27 Hazelwood Street,

Malden, Mass. 02148 [22] Filed: July 1, 1970 211 Appl.No.: 51,638

[52] US. Cl ..51/370, 51/393 [51] Int. Cl. ..B24d 15/04, B24b 5/40 [58] Field of Search ..51/364, 370, 375, 372, 392, 51/393 [56] References Cited UNITED STATES PATENTS 2,801,503 8/1957 Pass ..51/392 X 734,581 7/1903 Lockwood ..51/364 1,445,295 2/1923 Cangen ..51/364 2,484,335 10/1949 Dingerson ..51/370 R26,039 6/ 1966 Johnson ..51/392 FOREIGN PATENTS 0R APPLICATIONS 219,709 3/1957 Australia ..51/364 Primary Examiner-Donald G. Kelly AttorneyHarold E. Cole [57] ABSTRACT An abrading device to clean fittings and the like has an outer abrading member that receives a folded abrading sheet. The latter is retained in position by an inner retainer member that enters the outer member and retains the abrading sheet in position. A handle serves as a stop that predetermines the position of the abrading sheet on the outer abrading member.

3 Claims, 6 Drawing Figures ABRADING DEVICE FOR CLEANING CONCAVE CYLINDRICAL SURFACES The principal object of my invention is to provide an abrading device that carries a retainer member to hold an abrading sheet in position, and which can easily be removed from retaining position to change the sheet.

Another object is to provide in a single device means to abrade one or more sizes of fittings by making an outer abrading member also serve, on occasion, as an inner or retainer member for another and larger outer abrading member.

The foregoing and other objects which will appear as the nature of the invention is better understood, may be accomplished by a construction, combination and arrangement of parts such as is disclosed by the drawing. The nature of the invention is such as to render it susceptible to various changes and modifications, and, therefore, I am not to be limited to the particular construction disclosed by the drawing nor to that described in the specification; but am entitled to all such changes therefrom as fall within the scope of my invention.

In the drawing:

FIG. 1 is a side elevational view of my abrading device, extending into a tube, or fitting, that is shown in section, ready to clean the inner surface of said tube.

FIG. 2 is a plan view of my device, the inner or retainer sleeve being partly removed from the outer sleeve.

FIG. 3 is a sectional view taken on the line 33 of FIG. 1.

FIG. 4 is a side elevational view similar to FIG. 1; but showing a modification of my device.

FIG. 5 is a sectional view taken on the line 5-5 of FIG. 4.

FIG. 6 is a sectional view similar to FIG. 5; but showing a larger outer or abrading sleeve at the outside than that shown in FIG. 5.

As illustrated, my device has a handle 10 looped at one end having two attaching ends 12 and 14 that extend angularly from the main body of said handle. An outer member or sleeve 16 is open or arcuate-shaped having holes 18 and 20 therethrough adjacent the inner end extremity that receive respectively said ends 12 and 14. This outer sleeve 16 may be made of rubber or any suitable material, where yieldability is desired as when an abrading sheet 22 is desirably forced into any depressions in a fitting or tube P to be cleaned.

An abrading sheet 22 is wrapped around the outer peripheral surface of said outer sleeve 16, being folded over to provide folded ends as at 24 and 25 that extend over and partly cover the inner, peripheral surface of said sleeve 16.

To so retain said abrasive sheet 22 an inner sleeve or retainer member 26 is provided that is preferably open or arcuate-shaped, and has holes 28 and 30 that are in alignment respectively with said holes 18 and 20 and which receive said handle ends 12 and 14. This inner sleeve 26 fits inside said outer sleeve 16 bearing against said abrasive sheet folded ends 24 and 25. Said inner sleeve 26 may be of resilient material such as rubber.

Said sheet 22 should reach to the outer and extremity of said outer and inner sleeves and extend the length of said outer sleeve 16 until said attaching ends 12 and 14 are reached. The latter serve as stops that determine how far inwardly towards said handle 10 said abrasive sheet 22 extends.

To use my device to clean a fitting pipe or tubular article P, said handle is grasped by a workman 's fingers and the abrasive sheet 22 is rotated against the inner surface of said article P. It may be preferred in some circumstances to dispense with the handle 10 and insert one's finger inside the retainer sleeve 26 and rotate as above described.

, Since there are a number of different sizes of tubular articles P that must be sanded or cleaned, I may provide in one device more than one outer sleeve, using said outer sleeve 16 as an inner sleeve under some circumstances, for instance; as shown in said F108. 4, 5 and 6, I add an open or arcuateshaped outer sleeve 34 having two holes 36 and 38 that are in alignment with said holes 18 and 20 as well as holes 28 and 30 respectively, so that each of said handle ends 12 and 14 may enter three of said holes. In this modification the abrasive sheet 22 may be wrapaed around the outer peripheral surface of said outer sleeve with folded ends partly covering the inner peripheral surface of said sleeve 34. Said sleeve 16 then serves as a retainer, fitting inside said sleeve 34. In this modification the sleeve not in use may be swung to the rear as is said sleeve 34 shown in said FIG. 4. Or in the case of said inner sleeve 26 it may remain within said sleeve 16. This gives in the same tool several abrading members of different sizes.

What 1 claim is:

1. An abrading device comprising a first, arcuate outer sleeve, an abrading sheet at the outer peripheral surface thereof having folded end portions that extend to and part way around the inner peripheral surface thereof, and an inner sleeve that fits inside said outer sleeve and bears against said abrading sheet folded end portions, each said sleeve having a first hole therethrough adjacent the inner end extremity thereof and in alignment with each other, and another hole therethrough adjacent the inner end extremity and in alignment with each other, a handle having two attaching portions one of which enters both of said first holes and the other end portion of which enters both of said other holes.

2. An abrading device as of claim 1, said end portions extending angularly from the main body of said handle, said abrading sheet extending to and terminating inwardly at said end portions.

3. An abrading device as of claim 1, and another arcuate outer sleeve adapted to receive said abrading sheet at its peripheral outer surface having folded end portions that extend to and part way around the inner peripheral surface thereof, said first outer sleeve being adapted to fit inside said other outer sleeve and bear against said abrading sheet folded end portions at the outer surface of said other outer sleeve. 

1. An abrading device comprising a first, arcuate outer sleeve, an abrading sheet at the outer peripheral surface thereof having folded end portions that extend to and part way around the inner peripheral surface thereof, and an inner sleeve that fits inside said outer sleeve and bears against said abrading sheet folded end portions, each said sleeve having a first hole therethrough adjacent the inner end extremity thereof and in alignment with each other, and another hole therethrough adjacent the inner end extremity and in alignment with each other, a handle having two attaching portions one of which enters both of said first holes and the other end portion of which enters both of said other holes.
 2. An abrading device as of claim 1, said end portions extending angularly from the main body of said handle, said abrading sheet extending to and terminating inwardly at said end portions.
 3. An abrading device as of claim 1, and another arcuate outer sleeve adapted to receive said abrading sheet at its peripheral outer surface having folded end portions that extend to and part way around the inner peripheral surface thereof, said first outer sleeve being adapted to fit inside said other outer sleeve and bear against said abrading sheet folded end portions at the outer surface of said other outer sleeve. 